diff --git a/dtc-parser.y b/dtc-parser.y
index 39d9dac..15caf5a 100644
--- a/dtc-parser.y
+++ b/dtc-parser.y
@@ -26,7 +26,6 @@
 #include "srcpos.h"
 
 int yylex(void);
-void yyerror(char const *);
 cell_t cell_from_string(char *s, unsigned int base);
 
 extern struct boot_info *the_boot_info;
diff --git a/srcpos.h b/srcpos.h
index bc5b525..ce7ab5b 100644
--- a/srcpos.h
+++ b/srcpos.h
@@ -62,6 +62,7 @@ typedef struct YYLTYPE {
 
 
 
+extern void yyerror(char const *);
 
 extern int srcpos_filenum;